Depends on the child. As usual, each baby is different. My son didn't get any teeth until he was 9 1/2 months old...then he got 1 in finally. THEN the next 3 popped through all at once. They usually get the top 2 at the same time, and the bottom 2 at the same time, and quite often they get all 4 (not always, though!) at the same time. Then it is USUALLY the next one on either side of those. Right now I have a 13 month old and he has 8 teeth - 4 on top and 4 on bottom, and hasn't had any pop through since just after his 1st birthday.
at 12:42 AM on Oct. 13, 2009